Has anyone successfully run GNU Radio on a Pi 4? I recently purchased an
RTL-SDR dongle and thought it would be fun to experiment a little with
GNU Radio and learn something about SDR.
A couple of days ago, I fired up GNU Radio, and after having some
trouble figuring out how to get the audio sink to talk to the Pi, I
downloaded VE6EY's FM receiver flow graph. The flow graph runs, but the
Pi 4 just doesn't seem to have enough horsepower to run it in real time.
The audio is slow and distorted.
Thinking that it might be the WX widgets slowing down the program, I
first deleted the FFT display widgets, then converted the WX slider
controls to QT range controls. Neither had any effect on how well the
flow graph ran.
GQRX and CubicSDDR seem to work just fine. At least with both of them,
I'm able to receive FM broadcast and NOAA weather station. But, maybe
the PI4 just doesn't have enough horsepower to run GNU Radio? If so,
that's kind of disappointing.
73! <—ham radio lingo for “best regards"
**Dan KB6NU**
CW Geek, Ham Radio Instructor
Author of the "No Nonsense" amateur radio license study guides
Read my ham radio blog at http://www.kb6nu.com
